HARVARD BIOSCIENCE INC

Ticker: HBIO CUSIP: 416906105 Class: COM

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 184,678 Value ($000) $124 Avg Close $0.59 Range $0.38 - $0.94

Q1 2022

Shares 431,848 Value ($000) $2,682 Avg Close $5.92 Range $5.00 - $7.19

Q4 2021

Shares 411,875 Value ($000) $2,904 Avg Close $7.11 Range $6.36 - $8.23

Q3 2021

Shares 380,736 Value ($000) $2,658 Avg Close $7.96 Range $6.93 - $8.75

Q2 2021

Shares 383,183 Value ($000) $3,192 Avg Close $7.07 Range $5.37 - $8.55

Q1 2021

Shares 300,516 Value ($000) $1,641 Avg Close $4.86 Range $3.87 - $7.14

Q4 2020

Shares 332,115 Value ($000) $1,425 Avg Close $3.73 Range $2.93 - $4.58

Q3 2020

Shares 394,489 Value ($000) $1,187 Avg Close $3.36 Range $2.74 - $4.41

Q2 2020

Shares 248,836 Value ($000) $771 Avg Close $2.69 Range $2.06 - $3.26

Q1 2020

Shares 250,000 Value ($000) $553 Avg Close $2.71 Range $1.39 - $3.45

Q4 2019

Shares 524,264 Value ($000) $1,599 Avg Close $2.88 Range $2.40 - $3.39

Q3 2019

Shares 499,616 Value ($000) $1,536 Avg Close $2.49 Range $1.51 - $3.50

Q2 2019

Shares 556,886 Value ($000) $1,114 Avg Close $2.93 Range $1.92 - $4.66

Q1 2019

Shares 476,293 Value ($000) $2,053 Avg Close $3.63 Range $2.75 - $4.43

Q4 2018

Shares 489,439 Value ($000) $1,556 Avg Close $3.94 Range $2.96 - $5.23

Q3 2018

Shares 521,874 Value ($000) $2,740 Avg Close $5.61 Range $4.86 - $6.70

Q2 2018

Shares 500,544 Value ($000) $2,678 Avg Close $5.12 Range $4.20 - $6.15

Q1 2018

Shares 499,934 Value ($000) $2,500 Avg Close $4.48 Range $3.25 - $5.20

Q4 2017

Shares 536,681 Value ($000) $1,771 Avg Close $3.38 Range $2.95 - $3.85

Q3 2017

Shares 540,819 Value ($000) $2,028 Avg Close $2.96 Range $2.35 - $3.90

Q2 2017

Shares 429,460 Value ($000) $1,095 Avg Close $2.47 Range $2.25 - $2.80

Q1 2017

Shares 309,582 Value ($000) $805 Avg Close $2.88 Range $2.50 - $3.30

Q4 2016

Shares 238,530 Value ($000) $728 Avg Close $2.54 Range $2.25 - $3.05

Q3 2016

Shares 158,512 Value ($000) $431 Avg Close $2.78 Range $2.50 - $3.22

Q2 2016

Shares 162,208 Value ($000) $464 Avg Close $3.18 Range $2.61 - $3.90

Q1 2016

Shares 163,995 Value ($000) $495 Avg Close $2.84 Range $2.41 - $3.45

Q4 2015

Shares 185,608 Value ($000) $644 Avg Close $3.42 Range $2.73 - $4.24

Q3 2015

Shares 198,010 Value ($000) $748 Avg Close $4.65 Range $3.65 - $5.76

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	184,678	$124	$0.59	$0.38 - $0.94
Q1 2022	431,848	$2,682	$5.92	$5.00 - $7.19
Q4 2021	411,875	$2,904	$7.11	$6.36 - $8.23
Q3 2021	380,736	$2,658	$7.96	$6.93 - $8.75
Q2 2021	383,183	$3,192	$7.07	$5.37 - $8.55
Q1 2021	300,516	$1,641	$4.86	$3.87 - $7.14
Q4 2020	332,115	$1,425	$3.73	$2.93 - $4.58
Q3 2020	394,489	$1,187	$3.36	$2.74 - $4.41
Q2 2020	248,836	$771	$2.69	$2.06 - $3.26
Q1 2020	250,000	$553	$2.71	$1.39 - $3.45
Q4 2019	524,264	$1,599	$2.88	$2.40 - $3.39
Q3 2019	499,616	$1,536	$2.49	$1.51 - $3.50
Q2 2019	556,886	$1,114	$2.93	$1.92 - $4.66
Q1 2019	476,293	$2,053	$3.63	$2.75 - $4.43
Q4 2018	489,439	$1,556	$3.94	$2.96 - $5.23
Q3 2018	521,874	$2,740	$5.61	$4.86 - $6.70
Q2 2018	500,544	$2,678	$5.12	$4.20 - $6.15
Q1 2018	499,934	$2,500	$4.48	$3.25 - $5.20
Q4 2017	536,681	$1,771	$3.38	$2.95 - $3.85
Q3 2017	540,819	$2,028	$2.96	$2.35 - $3.90
Q2 2017	429,460	$1,095	$2.47	$2.25 - $2.80
Q1 2017	309,582	$805	$2.88	$2.50 - $3.30
Q4 2016	238,530	$728	$2.54	$2.25 - $3.05
Q3 2016	158,512	$431	$2.78	$2.50 - $3.22
Q2 2016	162,208	$464	$3.18	$2.61 - $3.90
Q1 2016	163,995	$495	$2.84	$2.41 - $3.45
Q4 2015	185,608	$644	$3.42	$2.73 - $4.24
Q3 2015	198,010	$748	$4.65	$3.65 - $5.76